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Enable/Disable VMware High Availability

Posted on 2013-10-28
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Last Modified: 2013-10-29
Enable/Disable VMware High Availability

VMware HA shows off in Vsphere Client 5.1.0. I would like to know if there is any negative impact before I enable HA.

Thank you
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Question by:jskfan
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by:Nick Rhode
Nick Rhode earned 500 total points
ID: 39606607
Shouldn't be any by just enabling it.  You would want to make sure you have the resources to move servers around.  Also make the the hardware is compatible host to host for you might have to enable EVC mode.
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LVL 124
ID: 39606653
There is no negative impact of enabling VMware HA.

But check you have correctly followed the instructions and have met the prerequistes for installing. e.g. networking is correct.

Once you have Enabled VMware HA - make sure you test it correctly.

Are all your ESXi Host Servers the same, e.g. make and model, CPU and RAM?
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Author Comment

by:jskfan
ID: 39606704
they are Dell Poweredge R710

2ESX= 8 CPUs x 2.659GHz RAM=14446.10MB
4ESX= 12 CPUsx 2.659GHz RAM =98294.02MB

All 6 ESXs are in the same Cluster
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LVL 124

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by:Andrew Hancock (VMware vExpert / EE MVE^2)
Andrew Hancock (VMware vExpert / EE MVE^2) earned 1000 total points
ID: 39606734
Should be no issues, if a server fails, but just keep an eye on the resources, because your servers are different specifications, and are not balanced. e.g. same RAM and CPUs!
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by:piyushranusri
piyushranusri earned 500 total points
ID: 39607997
no there will be no issue, if you are talking about just enable and disable.
first point you need to find out the reason behind that why  HA shows off in Vsphere Client 5.1.0





please share the output
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Author Comment

by:jskfan
ID: 39608702
HA shows Off , I believe they did not enable it..
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Accepted Solution

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Andrew Hancock (VMware vExpert / EE MVE^2) earned 1000 total points
ID: 39608734
If your require VMware HA, then Edit Cluster Settings, and put a tick in the box!
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Author Closing Comment

by:jskfan
ID: 39610488
Thank you Guys!
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